DC uninterruptible power supply and computer device using the same

Abstract

A DC uninterruptible power supply (DC UPS) is configured in a computer device that includes a power supply connected to an AC power source and a motherboard. The DC UPS is electrically connected between the power supply and the motherboard. Thus, when the power provided by the power supply is abnormal, the DC UPS can provide a set of DC powers to the motherboard and associated devices in the computer device.

1 . A computer device, comprising: 
 a power supply, which is connected to an alternating current (AC) power source and provides a direct current (DC) power;    a motherboard; and    a DC uninterruptible power supply (UPS) having a battery, the DC UPS being electrically connected to the power supply and the motherboard to thereby receive the DC power provided by the power supply to charge the battery, the DC UPS providing at least one set of DC powers to the motherboard, wherein, when the power supply powers abnormally, the DC UPS uses the battery to provide the set of DC powers to the motherboard.    
   
   
       2 . The computer device as claimed in  claim 1 , wherein the DC UPS further comprises a charger to receive the DC power and charge the battery.  
   
   
       3 . The computer device as claimed in  claim 1 , wherein the DC UPS further comprises a controller unit having a voltage detector electrically connected to the power supply for detecting whether the power supply is normal or abnormal.  
   
   
       4 . The computer device as claimed in  claim 1 , wherein the DC UPS further comprises a light-emitting unit and a controller unit having a microcontroller electrically connected to the light-emitting unit, and the microcontroller controls the light-emitting unit to light for a predetermined period of time when the DC UPS provides the set of DC powers to the motherboard and the computer device enters in a sleep mode.  
   
   
       5 . The computer device as claimed in  claim 1 , wherein the DC UPS further comprises a charger and a controller unit electrically connected to the power supply and the charger and having a microcontroller to control the charger to charge the battery.  
   
   
       6 . The computer device as claimed in  claim 1 , wherein the DC UPS further comprises a charger, a DC-DC inverter and a controller unit in an arrangement that the charger is electrically connected to the power supply and the battery, the DC-DC inverter is electrically connected to the motherboard, and the controller unit is electrically connected to the power supply, the charger and the DC-DC inverter.  
   
   
       7 . The computer device as claimed in  claim 1 , wherein the set of DC powers comprises three operating voltages of +12V, +5V, +3.3V, and one-standby voltage of +5V.  
   
   
       8 . The computer device as claimed in  claim 1 , wherein the DC UPS is implement in an expansion space of the computer device.  
   
   
       9 . The computer device as claimed in  claim 8 , wherein the expansion space is capable of accommodating a CD drive.  
   
   
       10 . A direct current uninterruptible power supply (DC UPS) implemented in a computer device comprising a power supply and a motherboard, wherein the power supply is connected to an alternating current (AC) power source and provides a DC power, the DC UPS comprising: 
 a battery;    a charger, which is electrically connected to the power supply of the computer device and the battery for charging the battery;    a DC-DC inverter, which is electrically connected to the battery and the motherboard for providing a set of DC powers to the motherboard; and    a controller unit, which is electrically connected to the power supply, the charger and the DC-DC inverter for controlling the DC-DC inverter to provide the set of DC powers to the motherboard when the power supply powers abnormally.    
   
   
       11 . The DC UPS as claimed in  claim 10 , wherein the controller unit comprises a voltage detector electrically connected to the power supply for detecting whether the power supply normal or abnormal.  
   
   
       12 . The DC UPS as claimed in  claim 10 , further comprising a light-emitting unit electrically connected to a microcontroller included in the controller unit, wherein the microcontroller controls the light-emitting unit to light for a predetermined period of time when the DC UPS provides the set of DC powers to the motherboard and the computer device enters in a sleep mode.  
   
   
       13 . The DC UPS as claimed in  claim 10 , wherein the controller unit comprises a microcontroller to control the charger to charge the battery.  
   
   
       14 . The DC UPS as claimed in  claim 10 , wherein the set of DC powers comprises three operating voltages of +12V, +5V, +3.3V, and one standby voltage of +5V.  
   
   
       15 . The DC UPS as claimed in  claim 10 , wherein the computer device comprises an expansion space, and the DC UPS is implement in the expansion space.  
   
   
       16 . The DC UPS as claimed in  claim 15 , wherein the expansion space is capable of accommodating a CD drive.  
   
   
       17 . A direct current uninterruptible power supply (DC UPS) system, comprising: 
 a power supply, which is connected to an AC power source and electrically connected to a DC-applied device; and    a DC UPS, which is a DC-DC power supply and electrically connected to the power supply and the DC-applied device, wherein the DC UPS provides a DC power to the DC-applied device when the power supply powers abnormally.    
   
   
       18 . The DC UPS system as claimed in  claim 17 , wherein the DC-applied device is a disk drive.  
   
   
       19 . The DC UPS system as claimed in  claim 17 , wherein the DC-applied device is an external CD driver.  
   
   
       20 . The DC UPS system as claimed in  claim 17 , wherein the DC-applied device is a motherboard.